Part Number: UCC28070
I am using UCC28070 interleaved PFC controller for 1.2kW battery charger design. I have few queries regarding this IC. These are mentioned below.
1. Does duty cycle in boost PFC varies according to input sine voltage?
2. What are the advantages and disadvantages if we keep duty cycle constant?
3. What are the advantages and disadvantages if we keep duty cycle variable?
4. Why loop bandwidth of PFC is always kept low such as at 20Hz?
In reply to John Griffin1:
Hello John, Thanks for reply. Can you please let us know the use of the boost bypass diode as highlighted in attached image. Our input ac rms voltage range is 165 to 295 and o/p of PFC is 420V . So please let us know the use case of boos bypass diode in our application? Regards, Dhananjay Yadav
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.